The weakness of static group comparison is that a researcher doesn't know whether group differences prior to the experiment caused differences in __________

The amount of taxes paid varies greatly from individual to individual and among socioeconomic classes.

Answer the following statement true (T) or false (F)

When one party holds the presidency but does not control both houses of Congress it is called

A) divided government. B) unified government. C) split government. D) controlled chaos. E) None of the above